Question

evaluate root 1+cos 60 degree /2

Answer 1

$\sqrt{ \frac{1 + \cos( 60) }{2} }$

$\sqrt{ \frac{1 + \frac{1}{2} }{2} }$

$\sqrt{ \frac{3}{4} }$

$\frac{ \sqrt{3} }{2}$

Answer 2

Answer:

$\frac{ \sqrt{1} + \cos(60)}{2} \\ = \frac{ \sqrt{1} + \frac{1}{2} }{2} \\ = \frac{ \frac{2 \sqrt{1} + 1}{2} }{2} \\ = \frac{2 \sqrt{1} + 1 }{4} \\ = \frac{2 \sqrt{1} }{4} + \frac{1}{4} \\ = \frac{ \sqrt{1} }{2} + \frac{1}{4}$

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